I'm not going to review this,so just put honest comment here.     Comfort is decent, Isolation is so that I can't hear my mother yell, Light bass but punchy and tight ... I don't care about bass so just put it as that , Detail and soundstage is decent for a price (I except a big upgrade from SHE3590 and RE400 but for IEM I guess it can't be as Dramatically as Speaker or Headphone), Natural sound treble wise, not so Analytical as monitor headphone thought.     But what stand out the most is Vocal, especially Female Vocal! Female vocal tonality...